• Journal of the Korean Society of Industry Convergence
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• v.27 no.3
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• pp.535-546
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• 2024

This research aims to develop a model to objectively and quantitatively measure the skill level of aircraft body assembly workers. Because aircraft body assembly is predominantly a manual process, skills management is a key factor of manufacturing competitiveness. Currently, skills management relies on the subjective judgment of supervisors, which lacks objectivity and reliability. As a remedy, this study proposed a systematic skill management model based on objective and quantitative evaluation criteria. By considering prior research, we developed an evaluation model that takes into account both expertise and versatility of a worker. The model selected five major tasks required for aircraft body assembly and established evaluation criteria considering the difficulty and maturity of each task. We then conducted a pilot evaluation with over 200 workers in four SMEs to validate the practicality and effectiveness of the model. Consequently, we identified and addressed the limitations of the existing evaluation method, subdivided the skill levels based on the performance capabilities of each task, and proposed a career growth path. The developed evaluation model offers critical data for executives and managers to determine work assignments, education, training, performance incentives, and wages. It is expected to enhance the attraction of new talent and systematize skills management in aviation manufacturing in the future.

• Korean Journal of Occupational Health Nursing
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• v.12 no.1
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• pp.39-49
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• 2003

The Purpose of this study is to identify the trends of studies on workers' musculoskeletal disorder and to suggest the direction of future research. 83 research article on workers' musculoskeletal disorder were reviewed. The results are as follows : 1. Studies on workers' musculoskeletal disorder have increased rapidly since 1996, but most of them were done by non-experimental design. 2. The most frequently selected subjects of studies are telephone operators and manufacturing workers. 3. The most frequently used instrument of studies is NIOSH's questionnaire & RULA (ergonomic work posture analysis). 4. The most frequently analysed variables relating to workers' musculoskeletal disorder are working years, hours of work a day, working process, and physical exercises. Therefore, it is needed to develop the management program of workers' musculoskeletal disorder and examine its effects.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2004.04a
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• pp.197-202
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• 2004

As a part of environmental pollution prevention and resources recycling, the regeneration of waste tire has been largely contributed to national industry. But, the worker has been evaded this regeneration process by reason of the best mischievous process condition among 3D industries. So, the first, the process condition of regenerating waste tire was analyzed. The second, the equipment or system was developed for the improvement of working strength and environment. The last, researchers intend to solve these problems

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2002.04a
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• pp.591-596
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• 2002

Fused deposition(FD) modeling by Stratasys Inc., is one of the material deposition subfamilies of solid freefrom fabrication(SFF) technologies. In this process, build material in the form of a flexible filament, is heated to a semi-liquid state and extruded from a controlled deposition head onto a fixtureless table in a temperature controlled environment. The position of nozzle is computer controlled relative to the base, which allows geometric complex models to be made to precise dimensions. FDM provide what the part was directly tested by the worker. It provide believable data. This Study is identify to surface roughness by build orientation adjustment. So, the paper is the study on surface roughness by build orientation at FDM.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1997.04a
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• pp.88-95
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• 1997

This study provides the useful actual data instead of the experience data using in industrial fields. Especially, values of each components of cutting force are effective in the rake angle, setting angle and cutting area. Many researches have been made on the work piece materials, kinds of bite materials, rake angle, nose radius and depth of cut, but a few on the bite setting angle. In order to select optimal cutting speed, it was summarized the following results are achieved; A chieved that an affect of cutting resistance on the setting angle is a little under giving experimental conditions and therefore a worker can be choose the value of it randomly.

• Journal of the Korean Society of Safety
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• v.20 no.2 s.70
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• pp.140-145
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• 2005

The PL(Product Liability) Law has been going into effect in Korea since July 2002. Accordingly, a company's responsibility for customers who are damaged by the defect in the product safety has been gradually strict and imposed burden on management. Not only general consumers but also labors who work with machine in the field of production are included in the concept of victim of the PL Law. That is to say, when a worker is damaged by the defect of machine he can institute a PL lawsuit more aggressively, not just get the industrial accident compensation as usual, only if not his own fault but the defect of machine used in the course of production can be demonstrated. This paper intends to present suggestions to PL prevention of manufacturing companies of industrial machine through the case research of PL accidents in the area of industrial safety.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2007.11a
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• pp.418-421
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• 2007

For Shock obsorber piston led is launched to the market through luring, milling, grooving, rolling, inspection and finally packing processes, To this time around 11 items, that is, out diameter and length etc..for the piston lod are inspected strictly as a total inspection. Piston Lod is being produced 30,000 a day and its excessively repeating inspection is getting induce repetition strain injury and reduce production rate as fatigue accumulation of worker increase inspection errors. Therefore, for the inspection process is severely needed a progressive improvement through the automation. In this study, we consider automation method of piston led inspection process and suggest an efficient automation strategy as improving the various problems in present manual inspection way.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.10a
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• pp.387-392
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• 2001

Fused deposition(FD) modeling by Stratasys Inc., is one of the material deposition subfamilies of solid freeform fabrication(SFF) technologies. In this process, build material in the form of a flexible filament, is heated to a semi-liquid state and extruded from a robotically controlled deposition head onto a fixtureless table in a temperature controlled environment. The position of nozzle is computer controlled relative to the base, which allows geometric complex models to be made to precise dimensions. FDM provide what the part was directly tested by the worker. It provide believable data. This study is experiment on surface roughness of part at FDM

• Journal of Labour Economics
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• v.36 no.3
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• pp.29-64
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• 2013

This paper documents the recent changes in wage density and decomposes them. Middle group is found to have shrunk, one-third of which reflects the changes in worker composition. The rest mostly reflects insufficient supply response to the rising skill demand within jobs. The pattern is more pronounced among manufacturing, large and unionized firms, and production workers.

• Journal of the Korean Graphic Arts Communication Society
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• v.14 no.2
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• pp.51-63
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• 1996

Contributions by Tsai Lun, the paper inventor, are as follows; 1. As most of the materials, which were used, were the waste articles, the cost was cheap and the large quantity could be produced at a time. 2. It was much more convenient to use or carry them beyond comparison with the existing materials. 3. He established how to manufacture the paper if which the materials is vegetable fiber and invented a successive paper making. 4. He extended the kinds of paper manufacturing materials by instructing the worker about how to make the bark paper from the paper mulberry fiber, namely, he tried to realized the technological renovation to connect the past and the future. 5. As a result of his efforts, he greatly contributed to the social development as the supply of books and knowledge was smoothly active, and the paper is the best and ultimate one as the writing material.